David Cameron and German Chancellor Angela Merkel have held "open, warm and friendly" talks about the controversial EU budget, Downing Street says.

BBC: Cameron and Merkel hold 'warm and friendly' EU budget talks

Barack, thank you very much again for the very friendly talks, for this very warm atmosphere, for making it possible to have this exchange of views in a very candid manner.

WHITEHOUSE: President Obama and Chancellor Merkel Press Conference